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JavaScript - Checkbox Count Function
Hi, I have a JavaScript function which counts the number of checkboxes in a form, it then counts the number of checked checkboxes, it then calculates a percentage based on the number of checkboxes checked. The problem I have is that if there is only one checkbox in the form (record from the db) then the JS function does not work.
Code: //function to check total number of GREEN CheckBoxes checked
function countChecksGreen(form)
{
//initialize total count to zero
var totalChecked = 0;
//get total number of CheckBoxes in form
var chkBoxCount = examsetting.checkboxgreen.length;
//loop through each CheckBox
for (var i = 0; i < chkBoxCount; i++)
{
//check the state of each CheckBox
if (eval("document.examsetting.checkboxgreen[" + i + "].checked") == true)
{
//it's checked so increment the counter
totalChecked += 1;
}
}
//return the number of checked
var greenElement = document.getElementById('green');
var green = greenElement.innerHTML;
var percentage = totalChecked/<?php echo $exam['questions']; ?>*100;
greenElement.innerHTML = Math.round(percentage*10)/10;
}
Any help would be appreciated. Similar TutorialsHello, i want to build a tax calculator's form, i want use a checkbox, so when the checkbox "checked" then the total tax will add the "luxury goods tax" on total tax. this is my code: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>KasKusbay Order Calculator</title>
</head>
<SCRIPT language = "javascript">
var currency_rates = new Array();
currency_rates["GBP"]=0.62;
currency_rates["CAD"]=0.99;
currency_rates["EUR"]=0.75;
currency_rates["AUD"]=0.96;
function getCurrencyRates()
{
var currencyRates=0;
var theForm = document.forms["myform"];
var selectedCurrency = theForm.elements["currency"];
currencyRates = currency_rates[selectedCurrency.value];
return currencyRates;
}
function addPbm()
{
var PbmService=0;
var theForm = document.forms["myform"];
var pbm = theForm.elements["pbm"];
if(pbm.checked==true)
{
pbmService = [J];
}
return pbmService;
}
function addPbm()
{
var PbmService=0;
var theForm = document.forms["myform"];
var pbm = theForm.elements["pbm"];
if(pbm.checked==true)
{
pbmService = [J];
}
return pbmService;
}
function ceiling( num, at )
{
var temp = num / at; // 523/50 ==>> 10.46
return Math.ceil(temp) * at; // ceil(10.46 ==>> 11, 11 * 50 ==>> 550
}
function calculateTotal()
{
var X;
var form = document.myform;
var A = form.price.value.replace(/[^\d\.]/g, "");
form.price.value = A;
var B = form.shipping_cost.value.replace(/[^\d\.]/g, "");
form.shipping_cost.value = B;
var F = (parseFloat(A) + parseFloat(B)) * getCurrencyRates();
var C = Number(F) * parseFloat("0.1");
form.total.value = C.toFixed(2);
var G = Number(F) + Number(C);
var H = Number(G) * parseFloat("0.05")
form.p2.value = H.toFixed(2);
var I = Number(G) * parseFloat("0.03")
form.p3.value = I.toFixed(2);
var J = Number(G) * parseFloat("0.2")
form.p4.value = J.toFixed(2);
X = Number(C) + Number(H) + Number(I) + addPbm();
form.total_IDR.value = X.toFixed(2);
//exp: ceiling: document.jslearnform.total_USD.value = Math.ceil(X);
//or decimal: document.jslearnform.total_USD.value = X.toFixed(2);
//or even document.jslearnform.total_USD.value = Math.ceil(X).toFixed(2);
}
</SCRIPT>
<body>
<form name="myform" method="post" action="">
<table width="93%" border="0" id="form_table2">
<tr>
<th width="24%"><p>Price ›</p></th>
<td width="37%"><p> $
<input type="text" size="7" id="price" name="price" />
<select id="currency" name="currency" onchange="calculateTotal()">
<option value"gbp">GBP</option>
<option value"cad">CAD</option>
<option value"eur">EUR</option>
<option value"aud">AUD</option>
</select>
<br />
Input Price and Currency</p></td>
<td width="39%" rowspan="3"><p align="right">Duty
<input type="text" style="background-color: #DCDDDD;" size="12" id="total" readonly name="total" value="" />
</p>
<p align="right">Sales Tax
<input type="text" style="background-color: #DCDDDD;" size="12" id="p2" readonly="readonly" name="p2" value="" />
</p>
<p align="right">Income Tax
<input type="text" style="background-color: #DCDDDD;" size="12" id="p3" readonly="readonly" name="p3" value="" />
</p>
<p align="right">Luxury Goods Tax
<input type="text" style="background-color: #DCDDDD;" size="12" id="p4" readonly="readonly" name="p4" value="" />
</p></td>
</tr>
<tr>
<th>Shipping Cost ›</th>
<td> $
<input type="text" size="7" id="shipping_cost" name="shipping_cost" />
<br /></td>
</tr>
<tr>
<th>Kind ›</th>
<td><select id="currency3" name="currency2" onchange="calculateTotal()">
<option value="value""EL">Electronic</option>
<option value="value""NL">Apparel</option>
</select>
<br />
<input type="checkbox" id="pbm" name="pbm" />
Luxury Item</td>
</tr>
<tr>
<th>Tax ›</th>
<td><div align="center">
<input type="text" style="background-color: #DCDDDD;" size="14" id="total_IDR" readonly name="total_IDR" value="" />
</div></td>
<td> </td>
</tr>
<tr>
<th> </th>
<td><div align="center">
<input type="button" value="Calculate" onclick = "javascript:calculateTotal()" />
<input type="reset" value="Reset" />
</div></td>
<td><div align="center"></div></td>
</tr>
</table>
</form>
</body>
</html>
But i have problem with the function command, the total tax doesn't appear, seems i made wrong function code on function adPbm(). Code: function addPbm()
{
var PbmService=0;
var theForm = document.forms["myform"];
var pbm = theForm.elements["pbm"];
if(pbm.checked==true)
{
pbmService = [J]; =====> anyone can help me correct this coding?
}
return pbmService;
}
Thank you for anyone could help. actually, the subject pretty much is the question, but if you want more detail, here goes: the below function: Code: function centerAndZoom(line) {
bounds = line.getBounds();
map.setCenter(bounds.getCenter(map), map.getBoundsZoomLevel(bounds));
}
pans and zooms the map when the user selects a line, which is really useful about 95% of the time and kind of annoying 5% of the time. So I was thinking it would be good to give them the option of disabling that function for the 5%. the function gets called from a couple of different places in the code, so for neatness' sakes it would be nice to have something within the function above that checks for the checkbox state before executing. but some kind of if/else where the function gets called would be ok, too... I'm not really fussy. thanks in advance. Hello, I am not a coder and this has been giving me grief for days My form is located here on page three of the multi form: http://www.rocpinions.com/main-form.html I have been working on this for days and can't figure it out. I have four check boxes. Dog, Cat, Other, and None of These. If Dog Cat and Other (or any combination of) are checked that is fine but if the check box "None of These" is checked I need it to remove the checks from All other boxes. This is an example of exactly what I need my form to do jsfiddle.net/srEuM/ Does anyone know how I can accomplish this with RS Form Pro? Here is the code I am using: Code: <script type="text/javascript">
function checkI()
{
var checkL = document.getElementsByName('form[PetsInHouse][]');
for (var i=0;i<checkL.length-1;i++)
if(document.getElementById('PetsInHouse3').checked){
document.getElementById('PetsInHouse'+i).disabled = true;
document.getElementById('PetsInHouse'+i).checked = false;
}
else {
document.getElementById('PetsInHouse'+i).disabled = false;
}
}
</script>
This is how I am calling it in the additional attributes in RS Form Pro Code: onclick="checkI();" I am currently using this code above and it only disables all checkboxes when "None of These" is checked but if I check any of the other boxes I can still check "None of These" and that is not the correct functionality. This is exactly what I need to do but in the same format I have above. http://jsfiddle.net/srEuM/ Any help would be greatly appreciated. Thank you Deziner I am fairly new to javascript and am attempting to create a function that will clear one checkbox when another is checked. I have multiple forms with dynamically generated names on the page. Here is what I have: <script type="text/javascript"> function undo_Complete(myForm) { var formName = myForm.name; if(document.formName.getElementsByName("Needs_Change").checked==true) { document.formName.getElementsByName("Complete").checked=false; } } </script> The two checkbox fields involved: <input name="Complete" value="Yes" <?php echo($Complete=="Yes") ? "checked" : ""; ?> size="4" type="checkbox"> <input name="Needs_Change" value="Yes" <?php echo($Needs_Change=="Yes") ? "checked" : ""; ?> size="4" type="checkbox" onClick="undo_Complete(this.form)"> Could someone please tell me what I am doing wrong? Thank you! Lisa Hello! I have modified the create_account.php page of an osCommerce store, and I added 4 checkboxes for the 4 terms that the customers must agree to. If not checked, the error message should come up (same for each - doesn't matter)> ok nevermind it's actually working now. For the sample code: Code: <form name=form>
<ul>
<li><input type="text" onkeyUp="calc1();" name=x ></li>
<li><input type="text" onkeyUp="calc2();" name=y ></li>
</ul>
</form>
<script>
function calc1() {
document.form.y.value = (10 * document.form.x.value).toPrecision(5);
}
function calc2() {
document.form.x.value = (0.1 * document.form.y.value).toPrecision(5);
}
</script>
How can I use a checkbox to : (1) Upon check, change the current values to toExponential(5) format (2) Use a different script and/or function that would then calculate with toExponential(5) [as opposed to the hard coded toPrecision(5) in the current functions. (3) Upon unchecking, the result should should go back to Precision and change the function and/or script back to the original. So here's what i want to do: i have 2 checkboxes, when Checkbox A is checked, i want to automatically check the checkbox B. When A is unchecked, then uncheck B how can i do that? thanks a lot ! Hi, If I have two check-boxes and one is already checked and then the is checked, how would I get it to uncheck the first one using JavaScript. Thanks, Cs1h I've been looking everywhere for a script that counts up from 1 to 10, but can't find anything. I even searched the forums. Basically just something that starts from 1 and then replaces itself with 2, and so on. Thanks! Hi, I am not a Javascript programmer and I am facing some barriers. Maybe some of you could help me. I would need a script that can be used to count down until any given date with hour, minutes and seconds. For example: Quote: September 10, 2009 16:02:00 Bob Kuspe hi i am new to javascript. i make a mcq quiz website in one of server side script. now for that website i want to make count down timer so when that quiz starts the user will have 5 minutes to complete that quiz if use does not able to complete quiz in given time then quiz should disable and shows the user score how can i achieve this Deleted
Hi, I want to do a redirect count so that the user can see the count going down. for example, I want them to be able to see the following. You will be redirected in 5 seconds. The user should be able to see the count going down from 5 to 4 to 3 to 2 to 1 and then they are redirected. I can get the page to redirect after 5 seconds but I want the user to be able to see it count down. Thanks in advance for your help I would like to count how many duplicate values I have in an array. My below attempt doesnt count the duplicate values: Code: var ct = 0;
for(var i = 0;i < myArray.length;i++)
{
var myData = getData[i].city;
if(myData == myData)
{
ct++;
}
alert("Total Count = " + ct);
}
Please advise the best way to do this. Hi, I am new here and am hoping for some guidance or a solution. Any help is greatly appreciated. I have a total count in a shopping cart stored from PHP as a cookie. I.E. compare[233], compare[324] (where the id is the item ID). I want to update the count of items in the cart in real time, so when the visitor clicks "Add", the count will update without reloading the page. Currently, I can get PHP to count the cookies, but not JS. The problem that I am having is that if the items are 7, and an item is added it will go to 8 correctly, if another item is added it goes to 14, not 9. This is the code that I have so far: Code: <?php
$saved_ct = $number_of_items_already_in_cart; // # of cookies found or 'compare' I.E. 7
?>
<script type="text/javascript">
function increase(){
var i=<?php echo "$saved_ct"; ?>;
i++;
document.getElementById('i').innerHTML= + i;
}
</script>
Cart: (<b id=\"saved_ct\">{$saved_ct}</b>)
---
Item: <a href=\"#\" id=\"{$id}\" onclick=\"increase();return false\">Add to basket</a>
I've downloaded a simple wysiwyg script from the internet, however I want to add a wordcounter to it. The main idea is that the amount of words is refreshed every time a new character is entered. However I haven't got a clue on how to implement this, I've used javascript a lot a few years ago.. but this is out of my league. So I'm hoping someone can help me with this. The html file: Quote: <html> <head> <style type="text/css">@import url('SimpleTextEditor.css');</style> <script src="SimpleTextEditor.js"></script> <script type="text/javascript"> function countWords(){ document.form1.wordcount.value = document.form1.inputString.value.split(' ').length + '/300 words'; if (document.form1.inputString.value.split(' ').length >= 50){ document.getElementById("wordcount").style.color = "red"; }else{ document.getElementById("wordcount").style.color = "black"; } } </script> </head> <body> <form name="form1" method="post"> <div style="height:34px;width:750px;margin-bottom:5px;background-image:url('mainbar.png');background-repeat:no-repeat; "><input style="margin-top:6px;margin-left:25px;" name="wordcount" type="text" value="" size="6"></div> <textarea name="inputString" id="inputString" cols="70" rows="4" onkeyup='countWords();'></textarea> <br> <script> var ste = new SimpleTextEditor("inputString", "ste"); ste.cssFile = 'test.css'; ste.charset = 'iso-8859-1'; ste.init(); </script> <input type="submit" value="submit" onclick="ste.submit();"> </form> </body> </html> The javascript file: Quote: function SimpleTextEditor(id, objectId) { if (!id || !objectId) { alert("SimpleTextEditor.constructor(id, objectId) failed, two arguments are required"); } var self = this; this.id = id; this.objectId = objectId; this.frame; this.viewSource = false; this.path = ""; // with slash at the end this.cssFile = ""; this.charset = "iso-8859-1"; this.editorHtml = ""; this.frameHtml = ""; this.textareaValue = ""; this.browser = { "ie": Boolean(document.body.currentStyle), "gecko" : (navigator.userAgent.toLowerCase().indexOf("gecko") != -1) }; this.init = function() { if (document.getElementById && document.createElement && document.designMode && (this.browser.ie || this.browser.gecko)) { // EDITOR if (!document.getElementById(this.id)) { alert("SimpleTextEditor "+this.objectId+".init() failed, element '"+this.id+"' does not exist"); return; } this.textareaValue = document.getElementById(this.id).value; var ste = document.createElement("div"); document.getElementById(this.id).parentNode.replaceChild(ste, document.getElementById(this.id)); ste.id = this.id+"-ste"; ste.innerHTML = this.editorHtml ? this.editorHtml : this.getEditorHtml(); // BUTTONS var buttons = ste.getElementsByTagName("td"); for (var i = 0; i < buttons.length; ++i) { if (buttons[i].className == "button") { buttons[i].id = this.id+'-button-'+i; buttons[i].onmouseover = function() { this.className = "button-hover"; } buttons[i].onmouseout = function() { this.className = this.className.replace(/button-hover(\s)?/, "button"); } buttons[i].onclick = function(id) { return function() { this.className = "button-hover button-click"; setTimeout(function(){ document.getElementById(id).className = document.getElementById(id).className.replace(/(\s)?button-click/, ""); }, 100); } }(buttons[i].id); } } // FRAME if (this.browser.ie) { this.frame = frames[this.id+"-frame"]; } else if (this.browser.gecko) { this.frame = document.getElementById(this.id+"-frame").contentWindow; } this.frame.document.designMode = "on"; this.frame.document.open(); this.frame.document.write(this.frameHtml ? this.frameHtml : this.getFrameHtml()); this.frame.document.close(); insertHtmlFromTextarea(); } }; function lockUrls(s) { if (self.browser.gecko) { return s; } return s.replace(/href=["']([^"']*)["']/g, 'href="simpletexteditor://simpletexteditor/$1"'); } function unlockUrls(s) { if (self.browser.gecko) { return s; } return s.replace(/href=["']simpletexteditor:\/\/simpletexteditor\/([^"']*)["']/g, 'href="$1"'); } function insertHtmlFromTextarea() { try { self.frame.document.body.innerHTML = lockUrls(self.textareaValue); } catch (e) { setTimeout(insertHtmlFromTextarea, 10); } } this.getEditorHtml = function() { var html = ""; html += '<input type="hidden" id="'+this.id+'" name="'+this.id+'" value="">'; html += '<table class="ste" cellspacing="0" cellpadding="0">'; html += '<tr><td class="bar"><table id="'+this.id+'-buttons" cellspacing="0" cellpadding="0"><tr>'; //html += '<td><select onchange="'+this.objectId+'.execCommand(\'formatblock\', this.value);this.selectedIndex=0;"><option value=""></option><option value="<h1>">Heading 1</option><option value="<h2>">Heading 2</option><option value="<h3>">Heading 3</option><option value="<p>">Paragraph</option><option value="<pre>">Preformatted</option></select></td>'; //html += '<td><div class="separator"></div></td>'; html += '<td class="button"><img src="'+this.path+'images/bold.gif" width="20" height="20" alt="Bold" title="Bold" onclick="'+this.objectId+'.execCommand(\'bold\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/italic.gif" width="20" height="20" alt="Italic" title="Italic" onclick="'+this.objectId+'.execCommand(\'italic\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/underline.gif" width="20" height="20" alt="Underline" title="Underline" onclick="'+this.objectId+'.execCommand(\'underline\')"></td>'; html += '<td><div class="separator"></div></td>'; html += '<td class="button"><img src="'+this.path+'images/left.gif" width="20" height="20" alt="Align Left" title="Align Left" onclick="'+this.objectId+'.execCommand(\'justifyleft\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/center.gif" width="20" height="20" alt="Center" title="Center" onclick="'+this.objectId+'.execCommand(\'justifycenter\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/right.gif" width="20" height="20" alt="Align Right" title="Align Right" onclick="'+this.objectId+'.execCommand(\'justifyright\')"></td>'; html += '<td><div class="separator"></div></td>'; html += '<td class="button"><img src="'+this.path+'images/ol.gif" width="20" height="20" alt="Ordered List" title="Ordered List" onclick="'+this.objectId+'.execCommand(\'insertorderedlist\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/ul.gif" width="20" height="20" alt="Unordered List" title="Unordered List" onclick="'+this.objectId+'.execCommand(\'insertunorderedlist\')"></td>'; html += '<td><div class="separator"></div></td>'; html += '<td class="button"><img src="'+this.path+'images/outdent.gif" width="20" height="20" alt="Outdent" title="Outdent" onclick="'+this.objectId+'.execCommand(\'outdent\')"></td>'; html += '<td class="button"><img src="'+this.path+'images/indent.gif" width="20" height="20" alt="Indent" title="Indent" onclick="'+this.objectId+'.execCommand(\'indent\')"></td>'; //html += '<td><div class="separator"></div></td>'; //html += '<td class="button"><img src="'+this.path+'images/link.gif" width="20" height="20" alt="Insert Link" title="Insert Link" onclick="'+this.objectId+'.execCommand(\'createlink\')"></td>'; //html += '<td class="button"><img src="'+this.path+'images/image.gif" width="20" height="20" alt="Insert Image" title="Insert Image" onclick="'+this.objectId+'.execCommand(\'insertimage\')"></td>'; //html += '<td><div class="separator"></div></td>'; //html += '<td class="button"><img src="'+this.path+'images/help.gif" width="20" height="20" alt="Help" title="Help" onclick="'+this.objectId+'.openWindow(\''+this.path+'help.html\', \'300\', \'300\')"></td>'; html += '</tr></table></td></tr>'; html += '<tr><td class="frame"><iframe id="'+this.id+'-frame" frameborder="0"></iframe></td></tr>'; html += '<tr><td class="source"><input id="'+this.id+'-viewSource" type="checkbox" onclick="'+this.objectId+'.toggleSource()"> View Source</td></tr>'; html += '</table>'; return html; }; this.getFrameHtml = function() { var html = ""; html += '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">'; html += '<html><head>'; html += '<meta http-equiv="Content-Type" content="text/html; charset='+this.charset+'">'; html += '<title>SimpleTextEditor frame</title>'; html += '<style type="text/css">pre { background-color: #eeeeee; padding: 0.75em 1.5em; border: 1px solid #dddddd; }</style>'; if (this.cssFile) { html += '<link rel="stylesheet" type="text/css" href="'+this.cssFile+'">'; } html += '<style type="text/css">html,body { cursor: text; } body { margin: 0.5em; padding: 0; }</style>'; html += '</head><body></body></html>'; return html; }; this.openWindow = function(url, width, height) { var x = (screen.width/2-width/2); var y = (screen.height/2-height/2); window.open(url, "", "scrollbars=yes,width="+width+",height="+height+",screenX="+(x)+",screenY="+y+",left="+x+",top=" +y); }; this.toggleSource = function() { var html, text; if (this.browser.ie) { if (!this.viewSource) { html = this.frame.document.body.innerHTML; this.frame.document.body.innerText = unlockUrls(html); document.getElementById(this.id+"-buttons").style.visibility = "hidden"; this.viewSource = true; } else { text = this.frame.document.body.innerText; this.frame.document.body.innerHTML = lockUrls(text); document.getElementById(this.id+"-buttons").style.visibility = "visible"; this.viewSource = false; } } else if (this.browser.gecko) { if (!this.viewSource) { html = document.createTextNode(this.frame.document.body.innerHTML); this.frame.document.body.innerHTML = ""; this.frame.document.body.appendChild(html); document.getElementById(this.id+"-buttons").style.visibility = "hidden"; this.viewSource = true; } else { html = this.frame.document.body.ownerDocument.createRange(); html.selectNodeContents(this.frame.document.body); this.frame.document.body.innerHTML = html.toString(); document.getElementById(this.id+"-buttons").style.visibility = "visible"; this.viewSource = false; } } document.getElementById(this.id+"-viewSource").checked = this.viewSource ? "checked" : ""; document.getElementById(this.id+"-viewSource").blur(); }; this.execCommand = function(cmd, value) { if (cmd == "createlink" && !value) { var url = prompt("Enter URL:", ""); if (url) { this.frame.focus(); this.frame.document.execCommand("unlink", false, null); if (this.browser.ie) this.frame.document.execCommand(cmd, false, "simpletexteditor://simpletexteditor/"+url); else if (this.browser.gecko) this.frame.document.execCommand(cmd, false, url); this.frame.focus(); } } else if (cmd == "insertimage" && !value) { var imageUrl = prompt("Enter Image URL:", ""); if (imageUrl) { this.frame.focus(); this.frame.document.execCommand(cmd, false, imageUrl); this.frame.focus(); } } else { this.frame.focus(); this.frame.document.execCommand(cmd, false, value); this.frame.focus(); } }; this.isOn = function() { return Boolean(this.frame); }; this.getContent = function() { try { return unlockUrls(this.frame.document.body.innerHTML); } catch(e) { alert("SimpleTextEditor "+this.objectId+".getContent() failed"); } }; this.submit = function() { if (this.isOn()) { if (this.viewSource) { this.toggleSource(); } document.getElementById(this.id).value = this.getContent(); } }; } As you can see there are a few lines I wrote myself in the HTML file, but they didn't do the trick. I have a script that almost does what I need: a simple counter that counts inmigrants remmittences to their home countries. Counting starts at 150,000,000,000 and it increments by 35,000 every one minute. The following scripts does the job done but it does not record in a continious manner, it resets each time the page is visited: Here is the code: ( I hope I get some help to make it: no reseting in each page visit) -------------------------------------------------- <html> <head> <script language="javascript" type="text/javascript"> <!-- var startCount = 150000000000; var addPerMin = 35000; function ProcessCounter() { document.getElementById('cnt').innerHTML = addCommas(String(cnt++)); setTimeout('ProcessCounter()', SetTimeOutPeriod); } function PutSpan() { document.write('<span id="cnt"></span>'); } function addCommas(nStr) { var rgx = /(\d+)(\d{3})/; while (rgx.test(nStr)) { nStr = nStr.replace(rgx, '$1' + ',' + '$2'); } return nStr; } var cnt = startCount; var SetTimeOutPeriod = Math.floor((1000 * 60) / addPerMin); function displayCounter() { PutSpan(); ProcessCounter(); } //--> </script> </head> <body <font size="30"> <script language="javascript" type="text/javascript">javascript:displayCounter();</script> </font> </body> I'm trying to make a countdown timer, it works fine if I define the value myself from where it has to start. However, when I try to take output from the user it says undefined and 'Nan'. Here is the code of html Code: <html> <head> <script type="text/javascript" src = "experimento2.js"></script> <link rel="stylesheet" type="text/css" href="experimento2.css" /> </head> <body> <h1> Count DOWn!</h1> Enter the number to begin countdown with : <input type = "text" id = "user" onchange = "input()"/> <input type="button" onclick = "timedCount()" value = "begin" id = "begin" /> <input type = "button" onclick="stopCount()" value = "stop" id = "end" /><br> <div id = "start" >00 </div> </body> </html> Here is the script: Code: var t;
var l =document.getElementById("user").value;
var c = l;
function timedCount()
{
document.getElementById('start').innerHTML=c;
c=c-1;
t=setTimeout("timedCount()",1000);
}
function stopCount()
{
clearTimeout(t);
}
Basically my problem is that if I give c a value like c = 30. it works fine. But when I try to take the input , it gives an undefined error. Hey Guys, I am stuck on something that is probably a straight forward issue. Just can't get my head around it. Basically I have a whole bunch of checkboxes and I want to count the number that have the same class (only when selected) Example: Code: <input type="checkbox" name="Paris" value="FR" /> <input type="checkbox" name="Marseille" value="FR" /> <input type="checkbox" name="Cardiff" value="UK" /> <input type="checkbox" name="London" value="UK" /> <input type="checkbox" name="ROME" value="IT" /> When user checks a checkbox, output the number of checked boxes that have the same value. My thoughts: Code: $("input[type="checkbox"]").click(function(event){
alert($('input[type="checkbox"]:checked').val($('input[type="checkbox"]:checked').val()).length);
});
Not sure what the correct logic should be. Anyone with any ideas? |
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